Hi Ramsey,
Thanks for taking the time to respond to my questions.
If the RT patch has already been ported to 2.6.37 I would prefer to reuse that rather than re-invent the wheel. Seeing as the patches only involve the kernel and thus are covered under GPL, I think there wouldn't be any copyright issues if you were to share this code. In fact, if your customer is using these patches in a product, I believe they are obliged to share these changes.
Regards,
Grant